Dynamic categories

Undid storing categories in strings.js, instead using the localization method in songselect.js. category info gets passed down to view.js.

Moved categories to its own object instead of allstrings and adjusted code in the other files in order to maintain multilangual support

Bug fixes

- Fixed touch multiplayer drum being too small and nameplate drawing on top of it
- Fixed #lyric lines being forced to be lowercase and appearing too early
- Fixed exiting session while someone else is using netplay sending you to difficulty selection of the song that the netplay person has selected
- Fixed ≠MM title on song select not having the first symbol rotated
- Fixed nameplate cache in song select and in game not getting cleared
- Increased ping timeout for multiplayer

Admin page fixes
- Add meta viewport tag so that the admin pages can be opened on mobile
- On song list, songs that are not enabled are now marked
- Disable tabbing through diverge notes checkboxes in courses when adding or editing a song
- Add Hash to song adding
- Display an error if a local chart file has not been found while calculating hash
- If calculating the hash results in an error, do not discard all other changes

Fix crash when using non-localhost redis

Add custom Don

- Registered users can customise the colour of their Don and it will appear for other players
- Bug fixes:
  - Add lyrics checkbox to admin page
  - 2P shows above "creative" or "with lyrics" labels
  - Prevent accidental alt and menu keyboard presses from triggering browser menus
  - Fixed mouse hitboxes on difficulty selection
  - Clean cached sounds and lyrics when another song is loading
  - Fixed debug jumping to the top-left of the screen when hidden
  - Fixed server volume not being applied to songs

- Use inline "#LYRIC" lines in tja files
- "LYRICS:" in tja metadata can point to a vtt file, this overrides "#LYRIC"